1. Introduction
Thank you for choosing the Lenovo XT52 Wireless Bluetooth Earphones. These earphones are designed to provide a high-quality audio experience with advanced features such as Bluetooth V5.4 connectivity, HD call capabilities, HIFI stereo sound, and comfortable wear. This manual will guide you through the setup, operation, and maintenance of your new earphones to ensure you get the best performance.

2. Package Contents
Please check the box for the following items:
- 2 x Bluetooth Earphones (Left and Right)
- 1 x Charging Case
- 1 x USB Type-C Charging Cable
- 1 x User Manual
- Multiple sizes of ear tips (S, M, L)
3. Product Overview
The Lenovo XT52 earphones feature an ergonomic design for comfortable and stable wear, along with intuitive touch controls for easy management of your audio and calls.
Key Features:
- Cinema-Level Sound: Equipped with a 13mm high-resolution dynamic driver for HIFI sound quality.
- 360° Panoramic Surround: Reverse spatial sound-sensing architecture for an immersive audio experience.
- Comfortable Wear: 45° in-ear angle with ergonomic three-point support and multiple ear tip sizes.
- Long Battery Life: Up to 4.5 hours of single-use playback and approximately 18 hours total with the charging case.
- Crystal Clear Calls: Dual-mic noise cancellation for clear voice calls.
- Smart Touch Control: Built-in touch sensors for music and call management.
- Wide Compatibility: Supports Windows, iOS, Android, and HarmonyOS devices.


4. Setup
4.1 Charging the Earphones and Case
Before first use, fully charge the earphones and the charging case.
- Place the earphones into the charging case.
- Connect the USB Type-C charging cable to the charging port on the case and to a power source.
- The indicator lights on the case will show the charging status. A full charge takes approximately 1.5 hours for the earphones and case.

4.2 Pairing with a Device
The Lenovo XT52 earphones support seamless switching and quick connection.
- Open the charging case. The earphones will automatically enter pairing mode.
- On your device (smartphone, tablet, laptop), enable Bluetooth and search for available devices.
- Select "Lenovo XT52" from the list of devices.
- Once connected, you will hear a confirmation tone, and the earphones will be ready for use.
- After initial pairing, the earphones will automatically connect to the last paired device when taken out of the case.

5. Operating the Earphones
The Lenovo XT52 earphones feature smart touch controls on each earbud.
5.1 Touch Control Functions

- Answer/Hang up a call: Double click the left/right earphone touch button.
- Reject a call: Hold down the left/right earphone touch button for 2 seconds.
- Music Play/Pause: Double click the left/right earphone touch button.
- Previous Song: Triple tap the left earphone touch button.
- Next Song: Triple tap the right earphone touch button.
- Volume +: Click the right earphone touch button.
- Volume -: Click the left earphone touch button.
- Activate Voice Assistant: Press and hold the left/right earphone touch button for 2 seconds (smart devices must support voice assistant).
5.2 Call Functionality
The earphones provide HD call voice with real-time noise filtering to isolate distractions, ensuring clear communication.

5.3 Compatibility
The Lenovo XT52 earphones are fully compatible with a wide range of devices, including mobile phones, desktops, tablets, and laptops. They support various operating systems such as Windows, iOS, Android, and HarmonyOS.

6. Specifications
| Feature | Detail |
|---|---|
| Brand Name | Lenovo |
| Model | XT52 |
| Product Name | Wireless Bluetooth Earphones |
| Bluetooth Version | V5.4 |
| Working Range | Up to 10m |
| Speaker Unit | 13mm |
| Impedance | 32Ω |
| Impedance Range | up to 32 Ω |
| Mic Type | Silicon Microphone (MEMS Microphone) |
| Mic Sensitivity | -32dB±3dB |
| Speaker Power | 20mW*2 |
| S/N Rate | ≥70DB |
| THD | ≤5% |
| Frequency Response | 20Hz-20KHz |
| Earphone Battery Capacity | 40mAh |
| Charging Case Battery Capacity | 230mAh |
| Music Time (single charge) | About 5 hours |
| Integrated Battery Life (with case) | About 18 hours |
| Charging Time | About 1.5 hours |
| Charging Method | Charging case (Type-C) |
| Material | Plastic |
| NFC Technology | Yes |
| Active Noise-Cancellation | No |
| With Microphone | Yes |
| Volume Control | Yes |
| Control Button | Yes |
| Support APP | No |
| Wearing Method | In-ear |
7. Maintenance
To ensure the longevity and optimal performance of your Lenovo XT52 earphones, follow these maintenance guidelines:
- Cleaning: Regularly clean the earphones and charging case with a soft, dry, lint-free cloth. Do not use harsh chemicals or abrasive materials.
- Ear Tips: Remove and clean the ear tips periodically with mild soap and water. Ensure they are completely dry before reattaching.
- Charging Port: Keep the Type-C charging port free of dust and debris.
- Storage: When not in use, store the earphones in their charging case to protect them from dust and damage.
- Avoid Extreme Conditions: Do not expose the earphones to extreme temperatures, humidity, or direct sunlight.
- Liquid Contact: Avoid contact with liquids. If they get wet, dry them thoroughly before placing them back in the charging case or using them.
8. Troubleshooting
If you encounter any issues with your earphones, refer to the following common problems and solutions:
- Earphones not pairing:
- Ensure both earphones are fully charged.
- Place both earphones back into the charging case, close the lid, wait a few seconds, then open the lid again to re-enter pairing mode.
- Turn off and on Bluetooth on your device.
- Forget the device from your device's Bluetooth list and try pairing again.
- No sound from one earphone:
- Ensure both earphones are charged.
- Try placing both earphones back in the case and taking them out again.
- Reset the earphones (refer to the manual for specific reset instructions if available, otherwise try forgetting the device and re-pairing).
- Charging issues:
- Ensure the charging cable is securely connected to both the case and the power source.
- Try a different USB Type-C cable and power adapter.
- Clean the charging contacts on the earphones and in the case.
- Poor sound quality or disconnections:
- Ensure the earphones are within the 10m working range of your device.
- Reduce interference by moving away from other wireless devices or obstacles.
- Check your device's audio settings.
- Touch controls not responding:
- Ensure your fingers are clean and dry.
- Try restarting the earphones by placing them in the case and taking them out.
9. User Tips
- Handle with Care: The charging case, while durable, should be handled with care to prevent damage from drops or impacts.
- Optimal Fit: Experiment with the different ear tip sizes (S, M, L) to find the most comfortable and secure fit for your ears. A good seal improves sound quality and noise isolation.
- Regular Cleaning: Keep the ear tips and charging contacts clean to maintain hygiene and ensure reliable charging.
10. Warranty and Support
For warranty information and customer support, please refer to the documentation provided at the time of purchase or contact your retailer. Keep your proof of purchase for any warranty claims.
